Alarm.com Holdings, Inc. (ALRM) Ownership
ALRM ownership summary
as of October 17, 2026- Institutions
- 101.9% of shares outstanding
- Insiders
- 5.59% of shares outstanding
- Shares outstanding
- 49.1M
- Float
- 46.6M shares available to trade
- Short interest
- 9.38% 3.0M shares short
- Days to cover
- 6.53 short interest up 3.1% vs prior month
- Institutions 101.89%
- Insiders 5.59%
ALRM top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | BlackRock Inc | 19.34% | 9.5M | $544.6M | +355,310 (+3.9%) | June 30, 2026 |
| 2 | Vanguard Portfolio Management, LLC | 8.22% | 4.0M | $231.5M | +79,323 (+2.0%) | June 30, 2026 |
| 3 | Disciplined Growth Investors Inc | 7.30% | 3.6M | $205.7M | +316,628 (+9.7%) | June 30, 2026 |
| 4 | Bank of Montreal | 7.04% | 3.5M | $198.2M | +797,549 (+30.0%) | June 30, 2026 |
| 5 | BMO Capital Markets Corp. | 7.04% | 3.5M | $198.2M | +797,549 (+30.0%) | June 30, 2026 |
| 6 | State Street Corp | 4.46% | 2.2M | $125.5M | +151,985 (+7.5%) | June 30, 2026 |
| 7 | Vanguard Capital Management, LLC | 4.36% | 2.1M | $122.9M | −12,691 (−0.6%) | June 30, 2026 |
| 8 | Geode Capital Management, LLC | 2.73% | 1.3M | $76.8M | +82,520 (+6.6%) | June 30, 2026 |
| 9 | Dimensional Fund Advisors, Inc. | 2.56% | 1.3M | $72.2M | +141,307 (+12.6%) | June 30, 2026 |
| 10 | Morgan Stanley - Brokerage Accounts | 2.41% | 1.2M | $67.9M | −79,580 (−6.3%) | June 30, 2026 |
| 11 | Arrowstreet Capital Limited Partnership | 2.06% | 1.0M | $58.0M | +231,574 (+29.7%) | June 30, 2026 |
| 12 | Geneva Capital Management | 1.69% | 828K | $47.5M | −241,674 (−22.6%) | June 30, 2026 |
| 13 | FMR Inc | 1.58% | 775K | $44.5M | −193,699 (−20.0%) | June 30, 2026 |
| 14 | Two Sigma Investments LLC | 1.38% | 677K | $38.8M | −4,664 (−0.7%) | June 30, 2026 |
| 15 | Northern Trust Corp | 1.35% | 663K | $38.0M | +20,616 (+3.2%) | June 30, 2026 |
| 16 | Charles Schwab Investment Management Inc | 1.28% | 630K | $36.2M | +50,628 (+8.7%) | June 30, 2026 |
| 17 | The Goldman Sachs Group Inc | 1.22% | 599K | $34.4M | +34,061 (+6.0%) | June 30, 2026 |
| 18 | T. Rowe Price Associates, Inc. | 1.18% | 577K | $33.1M | −52,318 (−8.3%) | June 30, 2026 |
| 19 | American Century Companies Inc | 1.17% | 575K | $33.0M | +286,963 (+99.5%) | June 30, 2026 |
| 20 | Acadian Asset Management LLC | 1.10% | 539K | $30.9M | +157,667 (+41.4%) | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 14 holders added 3.5M shares and 6 cut 585K.
ALRM top mutual fund and ETF holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | iShares Core S&P Small-Cap ETF | 5.97% | 2.9M | $168.1M | +684 (+0.0%) | September 30, 2026 |
| 2 | Vanguard MStar Total Stk Mkt Idx Invest | 3.05% | 1.5M | $85.9M | −2,664 (−0.2%) | August 31, 2026 |
| 3 | iShares Russell 2000 ETF | 2.54% | 1.2M | $71.7M | −14,400 (−1.1%) | September 30, 2026 |
| 4 | Vanguard Information Technology ETF | 2.42% | 1.2M | $68.2M | −4,448 (−0.4%) | August 31, 2026 |
| 5 | Vanguard Small Cap Index | 2.20% | 1.1M | $62.0M | −372 (−0.0%) | August 31, 2026 |
| 6 | iShares Cybersecurity and Tech ETF | 1.44% | 707K | $40.5M | — | September 30, 2026 |
| 7 | Vanguard MStar Small Cap Growth Indx Inv | 1.26% | 620K | $35.5M | −11,930 (−1.9%) | August 31, 2026 |
| 8 | Fidelity Small Cap Index | 1.06% | 523K | $30.0M | +4,381 (+0.8%) | July 31, 2026 |
| 9 | State Street SPDR Port S&P 600 Sm CpETF | 0.92% | 450K | $25.8M | — | September 30, 2026 |
| 10 | iShares Russell 2000 Value ETF | 0.83% | 407K | $23.3M | +618 (+0.2%) | September 30, 2026 |
| 11 | Fidelity Enhanced Small Cap Core ETF | 0.75% | 369K | $21.2M | +771 (+0.2%) | September 30, 2026 |
| 12 | Vanguard Tax-Managed Small Cap Adm | 0.65% | 320K | $18.3M | — | August 31, 2026 |
| 13 | Disciplined Growth Investors | 0.59% | 289K | $16.6M | — | August 31, 2026 |
| 14 | Vanguard Russell 2000 ETF | 0.56% | 275K | $15.8M | +6,035 (+2.2%) | August 31, 2026 |
| 15 | T. Rowe Price Integrated US Sm Gr Eq | 0.56% | 273K | $15.7M | — | August 31, 2026 |
| 16 | iShares S&P Small-Cap 600 Growth ETF | 0.54% | 264K | $15.1M | — | September 30, 2026 |
| 17 | Schwab US Small-Cap ETF™ | 0.53% | 258K | $14.8M | +171 (+0.1%) | September 30, 2026 |
| 18 | Nationwide Geneva Small Cap Gr Instl Svc | 0.52% | 257K | $14.8M | −42,080 (−14.1%) | June 30, 2026 |
| 19 | Fidelity Extended Market Index | 0.50% | 245K | $14.0M | −413 (−0.2%) | August 31, 2026 |
| 20 | iShares Expanded Tech-Software Sect ETF | 0.49% | 239K | $13.7M | +2,275 (+1.0%) | September 30, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
ALRM insider transactions
latest 20| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2026-03-18 | Kevin Christopher Bradley | Sell | $45.97 | 1,510 | $69,415 |
| 2025-12-16 | Jeffrey A Bedell | Sell | $51.82 | 22,727 | $1.2M |
| 2025-12-12 | Jeffrey A Bedell | Sell | $52.51 | 2,273 | $119,355 |
| 2025-12-12 | Stephen C Evans | Sell | $52.27 | 1,154 | $60,320 |
| 2025-11-20 | Stephen Trundle | Buy | $48.07 | 10,000 | $480,700 |
| 2025-11-19 | Stephen Trundle | Buy | $48.53 | 12,469 | $605,121 |
| 2025-11-18 | Stephen Trundle | Buy | $48.57 | 3,531 | $171,501 |
| 2025-11-13 | Daniel Kerzner | Sell | $50.33 | 10,000 | $503,300 |
| 2025-11-12 | Daniel Kerzner | Sell | $50.29 | 20,004 | $1.0M |
| 2025-07-02 | Kevin Christopher Bradley | Sell | $56.75 | 754 | $42,790 |
| 2025-05-27 | Daniel Ramos | Sell | $57.68 | 7,000 | $403,760 |
| 2025-05-23 | Daniel Kerzner | Sell | $56.66 | 2,213 | $125,389 |
| 2025-05-23 | Daniel Ramos | Sell | $56.66 | 1,762 | $99,835 |
| 2025-05-23 | Jeffrey A Bedell | Sell | $56.66 | 2,204 | $124,879 |
| 2025-05-23 | Stephen Trundle | Sell | $56.66 | 3,644 | $206,469 |
| 2025-05-16 | Daniel Kerzner | Sell | $59.51 | 2,019 | $120,151 |
| 2025-05-16 | Daniel Ramos | Sell | $59.51 | 1,646 | $97,953 |
| 2025-05-16 | Jeffrey A Bedell | Sell | $59.51 | 2,019 | $120,151 |
| 2025-05-16 | Kevin Christopher Bradley | Sell | $59.51 | 390 | $23,209 |
| 2025-05-16 | Stephen Trundle | Sell | $59.51 | 3,626 | $215,783 |
Reported trades by company officers, directors and other filers (including disclosures by members of Congress where EODHD lists them). "—" where the filing gives no share count.
ALRM shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns ALRM
Institutional investors own 101.9% of Alarm.com's shares and insiders 5.59%. The largest holder is BlackRock Inc with 19.34% of the shares (9.5M), as of June 30, 2026. Among the top 20 institutions, 14 added shares and 6 reduced their stake in the latest filings. Short interest is 9.38% of the float, or 6.53 days of average trading volume. The share count rose 33.8% since 2014.
Related: ALRM analyst forecast, ALRM key metrics. See the ALRM stock overview for the latest quote and news.
ALRM ownership FAQ
Who owns the most Alarm.com stock?
The largest shareholders of Alarm.com are BlackRock Inc (19.34%), Vanguard Portfolio Management, LLC (8.22%), Disciplined Growth Investors Inc (7.30%), Bank of Montreal (7.04%), BMO Capital Markets Corp. (7.04%).
What percentage of Alarm.com is owned by institutions?
Institutions hold 101.9% of Alarm.com's shares outstanding; insiders hold 5.59%.
Which funds own Alarm.com?
The largest fund holders of Alarm.com are iShares Core S&P Small-Cap ETF (5.97%), Vanguard MStar Total Stk Mkt Idx Invest (3.05%), iShares Russell 2000 ETF (2.54%), Vanguard Information Technology ETF (2.42%), Vanguard Small Cap Index (2.20%).
What is Alarm.com's short interest?
3.0M shares of Alarm.com were sold short, 9.38% of the float; at the average daily volume it would take 6.53 days to cover.
Are insiders buying or selling Alarm.com?
Of the latest 20 reported insider transactions in Alarm.com (since May 16, 2025), 3 were purchases and 17 were sales.
How many shares of Alarm.com are outstanding?
Alarm.com has 49.1M shares outstanding, of which 46.6M are in the public float.